Communication protocol between master and slave device with regi

Details Communication protocol between master and slave device with regi Communication protocol between master and slave device with regi

1994-10-03

1997-05-13

Teska, Kevin J.

H03K 33562

Patent

active

056301529

ABSTRACT:
A method for full duplex communication between master and slave devices (403, 422) coupled by a serial peripheral interface (420) includes the steps of the slave device (422) updating a status register (421) based upon an event, after which the slave device (422) transmits a communication request to the master device (403). When the master device (403) thereafter takes the slave-select line low to initiate communication, the slave device (422) automatically transmits the contents of the status register (421) over the master-in-slave-out line. At the same time, the master device (403) transmits an "empty" byte of information over the master-out-slave-in line.

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